Dual nature of light

How many waves are in this picture?

• 1
• 2
• 3.5
• 4

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NGSS.MS-PS4-1

Of the following, what type of radiation has the shortest wavelength?

• X-ray
• Radio
• Microwave
• Visible

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NGSS.HS-PS4-1

Electormagnetic radiation travels through a vacuum at a speed of 

• 186,000 m/s.
• 125 m/s
• 3.00 x 10⁸ m/s
• It depends on the wavelength

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NGSS.HS-PS4-1

To calculate the frequency of an electromagnetic wave, you need to know the speed of the wave and its

• wavelength.

• intensity.

• refraction.

• amplitude.

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NGSS.HS-PS4-1

Light acts like

• a wave.

• a particle.

• Both a wave and a particle

• neither a wave nor a particle.

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NGSS.HS-PS4-3

Which of the following occurs as light travels farther from its source?

• Far from the source, photons come together in a small area.

• The intensity of light increases as photons move away from the source.

• The source gives off less light as photons move away from it.

• Far from the source, photons spread over a larger area.

The full range of frequencies of electromagnetic radiation is called

• visible light.

• radio waves.

• the electromagnetic spectrum.

• invisible radiation.

The waves with the longest wavelengths in the electromagnetic spectrum are

• Infrared rays.

• radio waves

• gamma rays

• X-rays

Which of the following occurs as a light wave bends when it passes from one medium into another?

• constructive interference

• refraction

• destructive interference

• reflection

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NGSS.MS-PS4-2

Light in the form of a particle that has discrete amount of energy is called a

• Charm

• Photon

• Exciton

• Muon

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